z8f083a ZiLOG Semiconductor, z8f083a Datasheet - Page 127

• Manufacturer Part Number: z8f083a
• Description: High-performance 8-bit Microcontrollers
• Manufacturer: ZiLOG Semiconductor

Table 71. Flash Status Register (FSTAT)
Table 72. Flash Page Select Register (FPS)
BITS
FIELD
RESET
R/W
ADDR
BITS
FIELD
RESET
R/W
ADDR
PS026308-1207
Flash Page Select Register
INFO_EN
R/W
R
7
0
7
0
Reserved—Must be 0.
FSTAT—Flash controller status
000000 = Flash controller locked
000001 = First unlock command received (73H written)
000010 = Second unlock command received (8CH written)
000011 = Flash controller unlocked
000100 = Sector protect register selected
001xxx = Program operation in progress
010xxx = Page Erase operation in progress
100xxx = Mass Erase operation in progress
The Flash page select register shares address space with the Flash sector protect register.
Unless the Flash controller is locked and written with 5EH, any writes to this address will
target the Flash page select register.
The register selects one of the eight available Flash memory pages to be programmed or
erased. Each Flash page contains 512-bytes of Flash memory. During a Page Erase
operation, all Flash memory having addresses with the most significant 7-bits given by
FPS[6:0] are chosen for Program/Erase operation.
Reserved
R/W
R
6
0
6
0
R/W
R
5
0
5
0
R/W
R
4
0
4
0
FF8H
FF9H
PAGE
R/W
R
3
0
3
0
FSTAT
R/W
Z8 Encore!
R
2
0
2
0
Product Specification
R/W
R
1
0
1
0
®
F083A Series
Flash Memory
R/W
R
0
0
0
0
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